000
FZNT31 KNHC 160316
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
1116 PM EDT Sun Aug 15 2021

Marine Weather HF Voice Broadcast for the Tropical N Atlantic
from 07N to 22N between 55W and 64W, the SW N Atlantic S of
31N W of 65W including Bahamas, and the Caribbean Sea.

Seas given as significant wave height, which is the average
height of the highest 1/3 of the waves. Individual waves may be
more than twice the significant wave height.

Synopsis for Caribbean Sea and Tropical N Atlantic from
07N to 19N between 55W and 64W

.SYNOPSIS...Tropical Depression Grace near 17.3N 68.6W 1011 mb
at 11 PM EDT moving W at 13 kt. Maximum sustained winds 30 kt
gusts 40 kt. Grace will maintain intensity as it moves to near
17.7N 70.3W Mon morning, to near 18.7N 72.8W Mon evening, to
near 19.5N 75.3W Tue morning, to near 20.4N 78.1W Tue evening,
to near 21.2N 81.0W Wed morning, and inland western Cuba near
22.2N 84.0W Wed evening. Grace will strengthen to a tropical
storm over the Gulf of Mexico near 23.5N 89.0W late Thu. Trade
winds will increase to fresh to strong speeds over the central
Caribbean beginning on Wed and through late Thu. 

NW Caribbean W of 85W

.OVERNIGHT...SE winds 10 to 15 kt. Seas 2 ft or less. 
.MON...SE winds 10 to 15 kt. Seas 3 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 2 ft or less, building to
3 ft after midnight. 
.TUE...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 ft in the morning, subsiding to 2 ft or
less. 
.TUE NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. 
.WED...E winds less than 10 kt. Seas 2 ft or less. 
.WED NIGHT...E winds 10 to 15 kt. Seas 2 ft or less.
.THU...E winds 10 to 15 kt. Seas 3 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.FRI...SE winds 10 to 20 kt. Seas 3 to 4 ft. 

Caribbean N of 15N between 72W and 85W

.OVERNIGHT...E winds 10 to 15 kt S of 18N, and E less than 10 kt
elsewhere. Seas 2 ft or less. 
.MON...S of 18N, E winds 10 to 15 kt. Elsewhere, E winds less
than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas
2 ft or less. 
.MON NIGHT...S of 18N, E winds less than 10 kt, increasing to
10 to 15 kt after midnight. Elsewhere, NE winds 20 to 30 kt.
Seas 2 ft or less. 
.TUE...S of 18N, E winds 10 to 20 kt. Elsewhere, E winds 20 to
30 kt, diminishing to 10 to 15 kt in the afternoon. Seas 2 ft or
less. 
.TUE NIGHT...E winds 10 to 20 kt S of 18N, and E 15 to 25 kt
elsewhere. Seas 2 ft or less, building to 3 ft after midnight. 
.WED...E winds 15 to 25 kt S of 18N, and E 10 to 20 kt
elsewhere. Seas 4 to 6 ft S of 18N, and 2 ft or less elsewhere. 
.WED NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft S of 18N, and
3 to 4 ft elsewhere. 
.THU...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.FRI...E winds 10 to 20 kt. Seas 3 to 5 ft. 

Caribbean from 11N to 15N W of 72W

.OVERNIGHT...NE winds less than 10 kt. Seas 3 ft. 
.MON...E winds less than 10 kt. Seas 3 ft. 
.MON NIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 2 ft or less. 
.TUE...E winds 10 to 15 kt. Seas 2 ft or less. 
.TUE NIGHT...E winds 10 to 20 kt. Seas 2 ft or less, building to
3 to 4 ft after midnight. 
.WED...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.WED NIGHT...E winds 10 to 20 kt within 90 nm of coast of
Colombia, and E 15 to 25 kt elsewhere. Seas 4 to 6 ft. 
.THU...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.FRI...E winds 10 to 20 kt. Seas 4 to 6 ft. 

SW Caribbean S of 11N

.OVERNIGHT...Variable winds less than 10 kt. Seas 3 ft,
subsiding to 2 ft or less. 
.MON...Variable winds less than 10 kt. Seas 2 ft or less. 
.MON NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. 
.TUE...Variable winds less than 10 kt. Seas 2 ft or less. 
.TUE NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. 
.WED...Variable winds less than 10 kt. Seas 2 ft or less. 
.WED NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. 
.THU...SW winds less than 10 kt. Seas 3 to 4 ft. 
.THU NIGHT...NW winds less than 10 kt in the evening, becoming
variable winds less than 10 kt. Seas 3 to 5 ft. 
.FRI...W winds less than 10 kt. Seas 3 to 5 ft. 

Caribbean between 64W and 72W

.OVERNIGHT...NE winds less than 10 kt Gulf of Venezuela, and E
20 to 30 kt elsewhere. Seas 3 ft. 
.MON...Variable winds less than 10 kt Gulf of Venezuela, and SE
20 to 30 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and
3 to 4 ft elsewhere. 
.MON NIGHT...NE winds less than 10 kt Gulf of Venezuela, and E
10 to 20 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and
3 to 4 ft elsewhere. 
.TUE...NE winds less than 10 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 3 to
5 ft elsewhere. 
.TUE NIGHT...E winds 10 to 20 kt. Seas 2 ft or less Gulf of
Venezuela, and 4 to 6 ft elsewhere. 
.WED...E winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela,
and 4 to 6 ft elsewhere. 
.WED NIGHT...E winds 10 to 20 kt. Seas 3 ft Gulf of Venezuela,
and 4 to 6 ft elsewhere. 
.THU...E winds 10 to 20 kt. Seas 3 ft Gulf of Venezuela, and
4 to 6 ft elsewhere. 
.THU NIGHT...E winds 10 to 20 kt. Seas 2 ft or less Gulf of
Venezuela, and 4 to 6 ft elsewhere. 
.FRI...E winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela,
and 4 to 6 ft elsewhere. 

Offshore Leeward Islands and adjacent ATLC waters from 15N to
19N W of 55W

.OVERNIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.MON...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.MON NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.TUE...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.TUE NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.WED...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.WED NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.THU...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.FRI...E winds 10 to 20 kt. Seas 4 to 6 ft. 

Offshore Windward Islands and adjacent ATLC waters from 07N to
15N W of 55W

.OVERNIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.MON NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.TUE...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.TUE NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.WED...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.WED NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.THU...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.FRI...E winds 10 to 20 kt. Seas 3 to 5 ft. 

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Tropical Depression Grace over the northeastern 
Caribbean near 17.3N 68.6W 1011 mb at 11 PM EDT is moving W at
13 kt, with maximum sustained winds 30 kt gusts 40 kt. Grace
will
 maintain intensity as it moves over Hispaniola on Mon, near or 
over eastern Cuba on Tue, and near or over west-central Cuba on 
Wed then strengthen to a tropical storm over the eastern Gulf of
Mexico near 33.5N 89.0W late Thu. Newly formed Tropical
Depression Eight near 33.2N 62.7W 1014 mb at 11 PM EDT is moving
S at 6 kt. Maximum sustained winds 25 kt gusts 35 kt. Tropical
Depression Eight will move to near 32.4N 62.8W Mon morning, then
strengthen to a tropical storm near 31.5N 63.3W Mon evening with
maximum sustained winds 35 kt gusts 45 kt. It will move to near 
31.1N 64.0W Tue morning, to near 31.0N 64.9W Tue evening, to
near
 near 31.0N 66.1W Wed morning with maximum sustained winds 50 kt
gusts to 60 kt, and to near 31.2N 67.4W Wed evening. Tropical 
Storm Eight will change little in intensity as it moves to just 
north of the area near 32.0N 68.5W late Thu. Otherwise, high 
pressure will persist across the area through the period. 

ATLC waters from 27N to 31N W of 77W

.OVERNIGHT...SE winds 10 to 15 kt. Seas 4 ft. 
.MON...SE winds 10 to 15 kt. Seas 3 to 5 ft. 
.MON NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. 
.TUE...SE winds 10 to 15 kt. Seas 3 to 4 ft. 
.TUE NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. 
.WED...SE winds 10 to 15 kt. Seas 3 to 4 ft. 
.WED NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. 
.THU...SE winds 10 to 15 kt. Seas 3 to 4 ft. 
.THU NIGHT...SE winds less than 10 kt. Seas 3 ft. 
.FRI...SE winds less than 10 kt. Seas 3 ft. 

ATLC waters from 27N to 31N between 65W and 77W

...TROPICAL STORM WARNING...

.OVERNIGHT...E winds 10 to 15 kt W of 70W, and E less than 10 kt
elsewhere. Seas 3 to 4 ft. 
.MON...E winds 10 to 15 kt W of 70W, and E less than 10 kt
elsewhere. Seas 3 to 4 ft. 
.MON NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E winds 10 to
15 kt W of 70W, and E less than 10 kt elsewhere. Seas 3 to 4 ft.
.TUE...TROPICAL STORM CONDITIONS POSSIBLE. W of 70W, E winds
10 to 15 kt. Elsewhere, NE winds less than 10 kt, becoming S
10 to 20 kt in the afternoon. Seas 3 to 4 ft. 
.TUE NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. W of 70W, E
winds less than 10 kt, increasing to 10 to 15 kt after midnight.
Elsewhere, SW winds 35 to 45 kt. Seas 3 to 4 ft. 
.WED...TROPICAL STORM CONDITIONS POSSIBLE. 
.WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.THU...TROPICAL STORM CONDITIONS POSSIBLE. 
.THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.FRI...TROPICAL STORM CONDITIONS POSSIBLE. S winds less than
10 kt. Seas 3 ft. 

Bahamas N of 22N

.OVERNIGHT...E winds 10 to 15 kt. Seas 3 ft. 
.MON...E winds 10 to 15 kt. Seas 3 ft in the morning, subsiding
to 2 ft or less. 
.MON NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. 
.TUE...E winds 10 to 20 kt, increasing to 20 to 30 kt in the
afternoon. Seas 3 ft. 
.TUE NIGHT...E winds 20 to 30 kt. Seas 3 to 4 ft. 
.WED...SE winds 20 to 30 kt. Seas 3 to 4 ft. 
.WED NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.THU...E winds 10 to 20 kt. Seas 2 ft or less. 
.THU NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. 
.FRI...E winds 10 to 15 kt. Seas 2 ft or less. 

ATLC waters from 22N to 27N between 65W and the Bahamas

.OVERNIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.MON NIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft. 
.TUE...SE winds 10 to 20 kt. Seas 3 to 5 ft. 
.TUE NIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft. 
.WED...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.THU...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.FRI...E winds 10 to 15 kt. Seas 3 to 4 ft. 

ATLC waters S of 22N W of 65W

.OVERNIGHT...E winds 20 to 30 kt. Seas 3 to 5 ft. 
.MON...E winds 10 to 20 kt, increasing to 20 to 30 kt in the
afternoon. Seas 3 to 5 ft. 
.MON NIGHT...E winds 20 to 30 kt. Seas 4 to 6 ft. 
.TUE...E winds 20 to 30 kt. Seas 5 to 7 ft. 
.TUE NIGHT...E winds 20 to 30 kt. Seas 4 to 6 ft. 
.WED...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.WED NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.THU...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.FRI...E winds 10 to 20 kt. Seas 3 to 5 ft. 

ATLC waters from 19N to 22N between 55W and 65W

.OVERNIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. 
.MON...E winds 10 to 15 kt. Seas 4 to 5 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. 
.TUE...E winds 10 to 15 kt. Seas 4 ft. 
.TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. 
.WED...E winds 10 to 15 kt. Seas 4 to 5 ft. 
.WED NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.THU...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 5 to 6 ft. 
.FRI...E winds 15 to 20 kt. Seas 5 to 6 ft.